Improved Interference Cancellation Scheme for Two-User Detection of Alamouti Code

In this correspondence, we propose an improved interference cancellation method for two-user multiple access based MIMO communication system. It is shown in the correspondence, that by using the proposed receiver array processing technique a diversity order of 2M can be achieved in a two-user interference cancellation system with two transmit and more than two (M > 2) receive antennas. We derive pairwise error probability (PEP) bounds for different number of receive antennas and prove the diversity order for different cases theoretically. The proposed scheme provides better diversity than one existing interference cancellation scheme.